Passengers on a Southwest Airlines jet described a jarring drop on a flight from Hollywood Burbank Airport to Las Vegas that injured two flight attendants.

Earlier this year, Southwest Airlines announced several major policy changes in an attempt to boost the airline's slumping profits. This was highlighted by the decision to begin charging for checked bags,

Southwest Airlines' CEO told investors in a July 24 earnings call that the airline could eventually open its own lounges.

Dallas-based Southwest Airlines’ fare strategy overhaul ran into trouble when the carrier launched its new “basic” economy tickets in May, forcing changes.

Southwest Airlines has announced a major change coming to its current seating system. The Texas-based airline previously had a “pick any seat” policy, allowing customers to purchase tickets in different boarding groups by selecting where they wanted to sit upon boarding the plane.

The passenger jet was responding to an alert of another aircraft in the vicinity, federal authorities said. A Cold War-era military plane was nearby at the time.